+++ /dev/null
-/*
- * Copyright (c) 2003-2006 The Regents of The University of Michigan
- * Copyright (c) 2007-2008 The Florida State University
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Korey Sewell
- * Stephen Hines
- */
-
-#include "arch/arm/regfile.hh"
-#include "arch/arm/utility.hh"
-#include "base/misc.hh"
-#include "base/bitfield.hh"
-
-using namespace ArmISA;
-
-uint64_t
-ArmISA::fpConvert(ConvertType cvt_type, double fp_val)
-{
-
- switch (cvt_type)
- {
- case SINGLE_TO_DOUBLE:
- {
- double sdouble_val = fp_val;
- void *sdouble_ptr = &sdouble_val;
- uint64_t sdp_bits = *(uint64_t *) sdouble_ptr;
- return sdp_bits;
- }
-
- case SINGLE_TO_WORD:
- {
- int32_t sword_val = (int32_t) fp_val;
- void *sword_ptr = &sword_val;
- uint64_t sword_bits= *(uint32_t *) sword_ptr;
- return sword_bits;
- }
-
- case WORD_TO_SINGLE:
- {
- float wfloat_val = fp_val;
- void *wfloat_ptr = &wfloat_val;
- uint64_t wfloat_bits = *(uint32_t *) wfloat_ptr;
- return wfloat_bits;
- }
-
- case WORD_TO_DOUBLE:
- {
- double wdouble_val = fp_val;
- void *wdouble_ptr = &wdouble_val;
- uint64_t wdp_bits = *(uint64_t *) wdouble_ptr;
- return wdp_bits;
- }
-
- default:
- panic("Invalid Floating Point Conversion Type (%d). See \"types.hh\" for List of Conversions\n",cvt_type);
- return 0;
- }
-}
-
-double
-ArmISA::roundFP(double val, int digits)
-{
- double digit_offset = pow(10.0,digits);
- val = val * digit_offset;
- val = val + 0.5;
- val = floor(val);
- val = val / digit_offset;
- return val;
-}
-
-double
-ArmISA::truncFP(double val)
-{
- int trunc_val = (int) val;
- return (double) trunc_val;
-}
-
-bool
-ArmISA::getCondCode(uint32_t fcsr, int cc_idx)
-{
- int shift = (cc_idx == 0) ? 23 : cc_idx + 24;
- bool cc_val = (fcsr >> shift) & 0x00000001;
- return cc_val;
-}
-
-uint32_t
-ArmISA::genCCVector(uint32_t fcsr, int cc_num, uint32_t cc_val)
-{
- int cc_idx = (cc_num == 0) ? 23 : cc_num + 24;
-
- fcsr = bits(fcsr, 31, cc_idx + 1) << (cc_idx + 1) |
- cc_val << cc_idx |
- bits(fcsr, cc_idx - 1, 0);
-
- return fcsr;
-}
-
-uint32_t
-ArmISA::genInvalidVector(uint32_t fcsr_bits)
-{
- //Set FCSR invalid in "flag" field
- int invalid_offset = Invalid + Flag_Field;
- fcsr_bits = fcsr_bits | (1 << invalid_offset);
-
- //Set FCSR invalid in "cause" flag
- int cause_offset = Invalid + Cause_Field;
- fcsr_bits = fcsr_bits | (1 << cause_offset);
-
- return fcsr_bits;
-}
-
-bool
-ArmISA::isNan(void *val_ptr, int size)
-{
- switch (size)
- {
- case 32:
- {
- uint32_t val_bits = *(uint32_t *) val_ptr;
- return (bits(val_bits, 30, 23) == 0xFF);
- }
-
- case 64:
- {
- uint64_t val_bits = *(uint64_t *) val_ptr;
- return (bits(val_bits, 62, 52) == 0x7FF);
- }
-
- default:
- panic("Type unsupported. Size mismatch\n");
- }
-}
-
-
-bool
-ArmISA::isQnan(void *val_ptr, int size)
-{
- switch (size)
- {
- case 32:
- {
- uint32_t val_bits = *(uint32_t *) val_ptr;
- return (bits(val_bits, 30, 22) == 0x1FE);
- }
-
- case 64:
- {
- uint64_t val_bits = *(uint64_t *) val_ptr;
- return (bits(val_bits, 62, 51) == 0xFFE);
- }
-
- default:
- panic("Type unsupported. Size mismatch\n");
- }
-}
-
-bool
-ArmISA::isSnan(void *val_ptr, int size)
-{
- switch (size)
- {
- case 32:
- {
- uint32_t val_bits = *(uint32_t *) val_ptr;
- return (bits(val_bits, 30, 22) == 0x1FF);
- }
-
- case 64:
- {
- uint64_t val_bits = *(uint64_t *) val_ptr;
- return (bits(val_bits, 62, 51) == 0xFFF);
- }
-
- default:
- panic("Type unsupported. Size mismatch\n");
- }
-}
#include "arch/arm/miscregs.hh"
#include "arch/arm/types.hh"
-#include "base/misc.hh"
#include "base/types.hh"
-#include "config/full_system.hh"
#include "cpu/thread_context.hh"
-class ThreadContext;
-
namespace ArmISA {
inline bool
}
}
- //Floating Point Utility Functions
- uint64_t fpConvert(ConvertType cvt_type, double fp_val);
- double roundFP(double val, int digits);
- double truncFP(double val);
-
- bool getCondCode(uint32_t fcsr, int cc);
- uint32_t genCCVector(uint32_t fcsr, int num, uint32_t cc_val);
- uint32_t genInvalidVector(uint32_t fcsr);
-
- bool isNan(void *val_ptr, int size);
- bool isQnan(void *val_ptr, int size);
- bool isSnan(void *val_ptr, int size);
-
/**
* Function to insure ISA semantics about 0 registers.
* @param tc The thread context.
{
tc->activate(0);
}
+
+ template <class XC>
+ Fault
+ checkFpEnableFault(XC *xc)
+ {
+ return NoFault;
+ }
};
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